SAN FRANCISCO: OpenAI announced January 29 it will retire GPT-4o and several legacy models from ChatGPT on February 13, ending the popular model’s turbulent run despite persistent user loyalty to its conversational warmth.
The retirement includes GPT-4o, GPT-4.1, GPT-4.1 mini, OpenAI o4-mini, GPT-5 Instant and GPT-5 Thinking. API access remains unchanged. OpenAI reports only 0.1 percent of users select GPT-4o daily, with the vast majority migrating to GPT-5.2.
GPT-4o launched May 2024 and quickly gained devotees for its warm, natural tone. OpenAI attempted retirement in August 2025 after GPT-5’s debut but swiftly reversed following backlash from Plus and Pro subscribers who valued GPT-4o for creative ideation and preferred its conversational style. CEO Sam Altman pledged “plenty of notice” for any future retirement.
The company now claims GPT-5.2 replicates GPT-4o’s warmth through personality controls allowing users to adjust settings for enthusiasm and conciseness. OpenAI acknowledged studying GPT-4o usage patterns to inform GPT-5.1 and GPT-5.2 development, particularly regarding emotional nuance and writing quality.
User communities remain skeptical. Reddit discussions under hashtag KeepGPT4o captured sentiment, with one user stating retirement means “retirement of me using OpenAI”. Critics question usage statistics, noting GPT-4o’s reduced accessibility and automatic model selection push users toward defaults.
The decision comes weeks after Altman acknowledged during OpenAI’s first town hall that writing performance declined in GPT-5.2 as development prioritized coding, reasoning and mathematics. The company introduced personality customization features attempting to address concerns about perceived sterility in newer models.
OpenAI framed the consolidation as focusing resources on models handling majority workloads. Infrastructure costs project to $1.4 trillion by February 2026, requiring efficient token generation. The move supports planned ChatGPT Go ad-supported tier requiring operational cost reductions.
The company is developing Adult Mode addressing feedback that GPT-5.2 exercises excessive caution, allowing freer conversations for users over 18. API deprecations began November 2025 with chatgpt-4o-latest sunset scheduled February 17, following established precedent as GPT-4 retired from ChatGPT April 2025.
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